heartbeat of a nation springing to life. they rejoiced, a people finally daring to exhale, to celebrate the impossible actually coming true. ( cheers ) after being imprisoned for 27 years, nelson mandela greeted the world. >> i greet you all. in the name of peace, democracy and freedom for all, amandla! >> viva! >> teichner: this was the man who had made history and challenged a world to confront itself. >> the demand in this country is for a nonracial society. >> teichner: mandela-- rebel, prisoner, leader, inspiration. >> africa, mayibuye!